A budget-priced stirrer with brushless, maintenance-free motor suitable for up to 20 litres of low to medium viscosity liquids up to 10000 mPas. Continuously variable, microprocessor controlled speed, range 50 to 2200rpm, with LCD digital speed or torque readout. Actual and set values monitored to ensure steady speed, even if viscosity changes. A safety cut-out protects the unit in the event of a rotor stall or overload. Supplied with RS232 data output port, stainless steel stand base, bosshead, clamping rod, non-slip mat for the sample vessel, 4-blade propeller stirrer 50mm diameter on 400mm rod. Overall W x D x H 200 x 310 x 710mm (mounted on stand). Weight 2.5kg. For 110-240V 50/60Hz single phase supplies.